Portable battery tester



FIG. 1 is a front of top-left perspective view of a portable battery tester showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a front elevational view of another embodiment of my new design of FIGS. 1-6, all other views being the same, and a portion of the handle has been omitted for ease of illustration. 

The ornamental design for a portable battery tester, as shown and described. 